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Post by Delbert on Feb 4, 2024 21:10:14 GMT 1
Good evening all
I was searching the forum earlier re speedometers, I came across a post regarding converting the odometer from km to mph , midlife crisis commented that the rd125 drive gear is compatible with the lc clocks , long shot but does anyone know if the lc gear is compatible with the air cooled clocks ? I've asked on the air cooled site also
Thanks delbert
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Post by stusco on Feb 4, 2024 21:29:15 GMT 1
I guess you would need to investigate this by inspecting the gears i have used the rd 125 gears I might have even used tzr i cant say 100% as i bought a few cheap of ebay at the time to get the right set im sure steve could tell you the number of teeth required
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Post by shaunthe2nd on Feb 5, 2024 9:21:53 GMT 1
The LC gears differ to the AC speedo gears I'm afraid.
The AC ones are normally shorter.
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Post by midlifecrisisrd on Feb 5, 2024 9:48:15 GMT 1
Good that shaun knows that as I didn't 🤣
Most FZR don't fit either
It's not so much the gears themselves but the length of the shaft they are on
A lot are too short
Steve
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Post by shaunthe2nd on Feb 5, 2024 11:49:35 GMT 1
If you want to post me your km gears I can compare and check against my stash to see if I have mph equivalents that I could sell you.
There are a number of differences between the various speedos and you usually have to open it up to find what gears are inside.
They often change model-model so difficult to predict what is inside sometimes, but my experience is that all the AC clocks I have worked on have shorter gears than LC clocks, its to do with the geometry of the cable entry section.
The earlier Nippon Seiko clocks all had steel gears, later ones have mix of steel and plastic, and then later again have all plastic gears.
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Post by Delbert on Feb 5, 2024 12:40:31 GMT 1
If you want to post me your km gears I can compare and check against my stash to see if I have mph equivalents that I could sell you. There are a number of differences between the various speedos and you usually have to open it up to find what gears are inside. They often change model-model so difficult to predict what is inside sometimes, but my experience is that all the AC clocks I have worked on have shorter gears than LC clocks, its to do with the geometry of the cable entry section. The earlier Nippon Seiko clocks all had steel gears, later ones have mix of steel and plastic, and then later again have all plastic gears. OK thanks shaun I'll maybe take you up on that . I'm just thinking the best plan of attack, the speedo over reads by 5mph ( possibly had a mph face fitted and needle not fitted correctly?). Also the back light is white instead of green and of course the odometer, biggest bug is the back light against the rev counter so if I'm to sort that I may as well sort it all , thank you for your wealth of info |
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Post by shaunthe2nd on Feb 5, 2024 13:53:57 GMT 1
The back light is usually effected by the colour of the plastic the facia is printed onto, and in some cases the colour of the actual casing (AC's usually plain galv, LC's white, XS usually light green, some YPVS are black etc)
AC clocks are usually fitted with green facia, but I'm not sure if I've done a 250B model before, plenty of C/D/E/F models, and LC/YPVS amongst others.
My guess is your tacho and speedo have mis-matched coloured facias.
Best way is to strip both and have a look. Happy to do this for you if its something you not wanting to do yourself.
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Post by Delbert on Feb 5, 2024 17:20:48 GMT 1
Thanks for your help shaun , I think I'll look for a donor clock so I have something to work with, I'll be in touch if I have no luck 😉
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Post by shaunthe2nd on Feb 5, 2024 18:29:12 GMT 1
Thanks for your help shaun , I think I'll look for a donor clock so I have something to work with, I'll be in touch if I have no luck 😉 I'm not sure about the 250B speedo, but the mph versions of the C/D/E/F variants all have a red digit on the odometer, whereas the km ones didn't, which erks some people if they want a 100% correct conversion. Worth checking if this was the case on the B if you want it spot on. |
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Post by Delbert on Feb 5, 2024 19:48:10 GMT 1
Thanks for your help shaun , I think I'll look for a donor clock so I have something to work with, I'll be in touch if I have no luck 😉 I'm not sure about the 250B speedo, but the mph versions of the C/D/E/F variants all have a red digit on the odometer, whereas the km ones didn't, which erks some people if they want a 100% correct conversion. Worth checking if this was the case on the B if you want it spot on. OK thanks I'll look into it although I'm not bothered about 100% it's not a show pony 😉 |
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